I've been to the beach at Delaware Seashore SP but, never camped there. However, I once tried to make a reservation and learned that you have to reserve long before the summer camping season begins.
I do know the sites are close and there are full hookup sites. However, Delaware Seashore SP and Cape Henlopen SP are the only campgrounds in the area that are "at the beach", although, I don't consider Cape Henlopen's beach area as being in walking distance from the campground. I haven't camped at Cape Henlopen since the 80's and back then they only had sites with water hookups available.
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